A lithographic printing plate precursor capable of forming an image
without alkali development, comprising a hydrophilic support and a
laser-sensitive photopolymerizable layer, wherein the photopolymerizable
layer or other layer included in the lithographic printing plate
precursor contains a copolymer containing at least a repeating unit
having at least one ethylenically unsaturated bond and a repeating unit
having at least two functional groups capable of interacting with a
surface of the support or a copolymer containing at least a repeating
unit having at least two ethylenically unsaturated bonds and a repeating
unit having at least one functional group capable of interacting with a
surface of the support.